ABB F204 RCCB 100A 4-Pole 300mA Type AC — ELCB

ABB ELCB/RCCB 100A 4P 300mA F204

ABB Earth Leakage Circuit Breaker (ELCB/RCCB) 4-pole, 100 A, 300 mA residual current rating. Built for durability and reliable protection in UAE electrical installations.

Key Features

• Four-pole (4P) residual current circuit breaker (RCCB) for earth-leakage protection
• Rated current: 100 A with 300 mA residual current sensitivity
• Type AC sensitivity: detects sinusoidal AC residual fault currents
• Conditional short-circuit rating: 10 kA
• Complies with IEC 61008
• DIN-rail mounting for standard distribution boards

• Brand: ABB
• Current rating: 100 A
• Type: ELCB/RCCB, 4P
• Residual current rating: 300 mA
• Model: F204
• Durable construction for long service life

Technical specifications

Applications

• Protection for distribution boards in commercial and residential UAE projects
• Suitable for 4-pole protection in main and sub-distribution panels
• Ideal for electrical rooms and control panels requiring reliable earth leakage protection

FAQ

• What's the difference between an MCB and an RCCB/RCD?
  An MCB protects circuits and wiring against overload and short-circuit current. An RCCB like this one protects against earth leakage by monitoring current imbalance and disconnecting the circuit — the two are complementary and are normally installed together in a distribution board.
• What does the 300mA sensitivity rating mean?
  300mA RCCBs are sized for fire and equipment protection on larger circuits and sub-mains, not personal shock protection — that requires a 30mA device. A 300mA unit is a common choice as a main incomer or sub-distribution protection device upstream of 30mA final-circuit RCDs.
• How many poles do I need?
  A 4-pole (4P) RCCB switches all three phases plus neutral together. Use 4P for three-phase supplies or distribution boards where the neutral must also be isolated; 2-pole devices are used for single-phase circuits.
• Can this be used alongside MCBs in the same board?
  Yes. This RCCB is typically installed upstream of the MCBs it protects, on the same DIN rail, so a leakage fault trips the RCCB while overloads/short circuits are still cleared by the individual MCBs.
• Can I install this myself?
  No. RCCBs are wired into a live distribution board and must be installed by a licensed electrician in line with UAE wiring regulations.